use submission completed_at

spec/system/submission_preview_spec.rb

@@ -26,6 +26,7 @@ RSpec.describe 'Submission Preview' do
           create(:encrypted_config, account:, key: EncryptedConfig::EMAIL_SMTP_KEY, value: '{}')
 
           submission.submitters.each { |s| s.update(completed_at: 1.day.ago) }
+          Submissions.maybe_update_completed_at(submission)
 
           visit submissions_preview_path(slug: submission.slug)
         end
@@ -47,6 +48,7 @@ RSpec.describe 'Submission Preview' do
 
       it "doesn't display the email form if SMTP is not configured" do
         submission.submitters.each { |s| s.update(completed_at: 1.day.ago) }
+        Submissions.maybe_update_completed_at(submission)
 
         visit submissions_preview_path(slug: submission.slug)
 

spec/system/template_spec.rb

@@ -207,6 +207,8 @@ RSpec.describe 'Template' do
         submitter.update!(completed_at: rand(2..5).days.ago)
       end
 
+      (last_week_submissions + this_week_submissions).each { |s| Submissions.maybe_update_completed_at(s) }
+
       visit template_path(template)
 
       (last_week_submissions + this_week_submissions).map(&:submitters).flatten.last(10).uniq.each do |submitter|